lily/span-bar.cc

   1 /*
   2   span-bar.cc -- implement Span_bar
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "dimen.hh"
  10 #include "span-bar.hh"
  11 #include "lookup.hh"
  12 #include "atom.hh"
  13 #include "paper-def.hh"
  14 #include "molecule.hh"
  15 #include "vertical-align-elem.hh"
  16
  17 void
  18 Span_bar::add (Bar*b)
  19 {
  20   spanning_l_arr_.push (b);
  21   add_dependency (b);
  22 }
  23
  24
  25
  26 void
  27 Span_bar::do_substitute_dependency (Score_elem*o, Score_elem*n)
  28 {
  29   spanning_l_arr_.unordered_substitute (o, n);
  30 }
  31
  32
  33 void
  34 Span_bar::set (Vertical_align_element *a)
  35 {
  36   add_dependency (a);
  37 }
  38
  39
  40 Interval
  41 Span_bar::do_width() const
  42 {
  43   return paper()->lookup_l ()->bar (type_str_, 40 PT).dim_.x (); // ugh
  44 }
  45
  46 void
  47 Span_bar::do_pre_processing()
  48 {
  49   Bar::do_pre_processing ();
  50
  51   if (spanning_l_arr_.size() < 1)
  52     {
  53       transparent_b_ = true;
  54       set_empty (true);
  55     }
  56   if (type_str_.empty_b ())
  57     {
  58       transparent_b_=true;
  59       set_empty (true);
  60     }
  61   else if (type_str_ == "|:")
  62     {
  63       type_str_ = ".|";
  64     }
  65   else if (type_str_ == ":|")
  66     {
  67       type_str_ = "|.";
  68     }
  69 }
  70
  71 Atom
  72 Span_bar::get_bar_sym (Real dy) const
  73 {
  74   return paper()->lookup_l ()->bar (type_str_, dy);
  75 }
  76
  77
  78 Molecule*
  79 Span_bar::brew_molecule_p() const
  80 {
  81   Interval y_int;
  82   for (int i=0; i < spanning_l_arr_.size(); i++)
  83     {
  84       Axis_group_element *common =
  85         common_group (spanning_l_arr_[i], Y_AXIS);
  86
  87       Real y = spanning_l_arr_[i]->relative_coordinate (common, Y_AXIS)
  88         -relative_coordinate (common,Y_AXIS);
  89
  90       y_int.unite (y + spanning_l_arr_[i]->height());
  91     }
  92
  93   Atom s = get_bar_sym (y_int.length());
  94   Molecule*output = new Molecule (Atom (s));
  95   output->translate_axis (y_int.center(), Y_AXIS);
  96   return output;
  97 }
  98
  99
 100 IMPLEMENT_IS_TYPE_B1(Span_bar,Bar);
 101
 102 Span_bar::Span_bar()
 103 {
 104   type_str_ = "";
 105 }